Spline Bushing (Quarter-Turn); Quarter Turn Valve; Stop Setting Procedure (Quarter-Turn) - Emerson EIM 2000 Series Installation And Maintenance Manual

Section 2: Assembly to Valves
August 2017
2.1.2

Spline Bushing (Quarter-Turn)

EIM removable Spline Bushing allows easy adaption to valve shaft diameter and Key.
Actuator may be rotated with respect to the valve shaft for unexpected or awkward field
installations.
1.
2.
3.
4.
5.
2.2

Quarter Turn Valve

2.2.1

Stop Setting Procedure (Quarter-Turn)

Built-in mechanical stops are provided to prevent handwheel operation beyond total
valve travel (90° ± 6°).
Positive mechanical stops are in full accordance with AWWA 250% rim pull overload
requirement. End of travel stops are independently adjusted, locked in place and sealed.
Figure 3
6
Move valve to full Open or Close.
Place Spline Bushing on valve shaft with Key and tighten set screw.
Using the handwheel on actuator, move the Gear Position Indicator Arrow (21)
to full Open or Close (duplicating the position in Step 1).
Position actuator so the spline bore is correctly aligned with the Spline Bushing
on stem shaft.
Move the actuator onto the shaft until the flange faces properly mate.
Secure with screws thru the adapter flange into the base of the actuator.
Installation and Maintenance Manual
E2K-401-0817 Rev. 1
Assembly to Valves